Examples of com.sun.media.jai.util.SunTileCache

com.sun.media.jai.util.SunTileCache
This is Sun Microsystems' reference implementation of the javax.media.jai.TileCache interface. It provides a central location for images to cache computed tiles, and is used as the default tile cache mechanism when no other tile cache objects are specified.
In this implementation, the cache size is limited by the memory capacity, which may be set at construction time or using the setMemoryCapacity(long) method. The tile capacity is not used. Different images may have very different tile sizes. Therefore, the memory usage for a specific tile capacity may vary greatly depends on the type of images involved. In fact, the tile capacity is rather meaningless. @see javax.media.jai.TileCache

/*  897 */     return new SunTileCache(memCapacity);
/*      */   }
/*      */ 
/*      */   public static TileCache createTileCache()
/*      */   {
/*  913 */     return new SunTileCache();
/*      */   }

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        assertImageEquals(cropped, gtCropped);
    }


    @Test
    public void testTileCache() {
        TileCache tc = new SunTileCache();
        RenderingHints hints = new RenderingHints(JAI.KEY_TILE_CACHE, tc);
        
        BufferedImage source = buildSource();
        ParameterBlock pb = buildParameterBlock(source);

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            jaiDef.setRenderingHint(JAI.KEY_TILE_FACTORY, recyclingFactory);
            jaiDef.setRenderingHint(JAI.KEY_TILE_RECYCLER, recyclingFactory);
        }
        
        // Setting up Cache Capacity
        SunTileCache jaiCache = (SunTileCache) jaiDef.getTileCache();
        jai.setTileCache( jaiCache );
        
        long jaiMemory = (long) (jai.getMemoryCapacity() * Runtime.getRuntime().maxMemory());
        jaiCache.setMemoryCapacity(jaiMemory);
        
        // Setting up Cache Threshold
        jaiCache.setMemoryThreshold((float) jai.getMemoryThreshold());
        
        jaiDef.getTileScheduler().setParallelism(jai.getTileThreads());
        jaiDef.getTileScheduler().setPrefetchParallelism(jai.getTileThreads());
        jaiDef.getTileScheduler().setPriority(jai.getTilePriority());
        jaiDef.getTileScheduler().setPrefetchPriority(jai.getTilePriority());

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        add(new Link("free.memory.jai") {
            private static final long serialVersionUID = 1L;


            public void onClick() {
                SunTileCache jaiCache = getGeoServer().getGlobal().getJAI().getTileCache();
                final long capacityBefore = jaiCache.getMemoryCapacity();
                jaiCache.flush();
                jaiCache.setMemoryCapacity(0); // to be sure we realease all tiles
                System.gc();
                System.runFinalization();
                jaiCache.setMemoryCapacity(capacityBefore);
                updateModel();
            }
        });
        
        int fontCount =  GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts().length;

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        GeoServerInfo geoServerInfo = getGeoServer().getGlobal();
        JAIInfo jaiInfo = geoServerInfo.getJAI();
        JAI jai =  jaiInfo.getJAI();
        CoverageAccessInfo coverageAccess = geoServerInfo.getCoverageAccess();
        SunTileCache jaiCache = jaiInfo.getTileCache();


        values.put(KEY_JAI_MAX_MEM, formatMemory(jaiCache.getMemoryCapacity()));
        values.put(KEY_JAI_MEM_USAGE, formatMemory(jaiCache.getCacheMemoryUsed()));
        values.put(KEY_JAI_MEM_THRESHOLD, Float.toString(100.0f * jaiCache.getMemoryThreshold()));
        values.put(KEY_JAI_TILE_THREADS, Integer.toString(jai.getTileScheduler().getParallelism()));
        values.put(KEY_JAI_TILE_THREAD_PRIORITY, Integer.toString(jai.getTileScheduler()
                .getPriority()));
        
        values.put(KEY_COVERAGEACCESS_CORE_POOL_SIZE, Integer.toString(coverageAccess.getCorePoolSize()));

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                jaiDef.setRenderingHint(JAI.KEY_TILE_RECYCLER, passThroughFactory);
            }
        }
        
        // Setting up Cache Capacity
        SunTileCache jaiCache = (SunTileCache) jaiDef.getTileCache();
        jai.setTileCache( jaiCache );
        
        long jaiMemory = (long) (jai.getMemoryCapacity() * Runtime.getRuntime().maxMemory());
        jaiCache.setMemoryCapacity(jaiMemory);
        
        // Setting up Cache Threshold
        jaiCache.setMemoryThreshold((float) jai.getMemoryThreshold());
        
        jaiDef.getTileScheduler().setParallelism(jai.getTileThreads());
        jaiDef.getTileScheduler().setPrefetchParallelism(jai.getTileThreads());
        jaiDef.getTileScheduler().setPriority(jai.getTilePriority());
        jaiDef.getTileScheduler().setPrefetchPriority(jai.getTilePriority());

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